Yes, and Chevron Supreme and Supreme Plus gasolines has high octane quality that can help maximize performance in cars with increased octane number requirements. Over time, deposits can accumulate in your car’s combustion chambers. These deposits can cause knocking, pinging, run-on or reduced performance, particularly if your car has driven over 25,000 kilometres. A high octane number gasoline can help you reduce or eliminate these problems by improving your engine’s combustion process. While some of these engines may be satisfied by the octane offered by our Plus grade, others may require the even higher octane of Chevron Supremes. So if combustion chamber deposit build-up is affecting your car, Chevron Supremes with our Techron additive can help restore its performance.